mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-25 03:17:13 +00:00
41 lines
1.4 KiB
Nix
41 lines
1.4 KiB
Nix
# Create an initial ramdisk containing the closure of the specified
|
|
# file system objects. An initial ramdisk is used during the initial
|
|
# stages of booting a Linux system. It is loaded by the boot loader
|
|
# along with the kernel image. It's supposed to contain everything
|
|
# (such as kernel modules) necessary to allow us to mount the root
|
|
# file system. Once the root file system is mounted, the `real' boot
|
|
# script can be called.
|
|
#
|
|
# An initrd is really just a gzipped cpio archive.
|
|
#
|
|
# Symlinks are created for each top-level file system object. E.g.,
|
|
# `contents = {object = ...; symlink = /init;}' is a typical
|
|
# argument.
|
|
|
|
{ stdenv, perl, cpio, contents, compressor, prepend, ubootTools
|
|
}:
|
|
|
|
stdenv.mkDerivation rec {
|
|
name = "initrd";
|
|
builder = ./make-initrd.sh;
|
|
|
|
makeUInitrd = stdenv.hostPlatform.platform.kernelTarget == "uImage";
|
|
|
|
nativeBuildInputs = [ perl cpio ]
|
|
++ stdenv.lib.optional makeUInitrd ubootTools;
|
|
|
|
# !!! should use XML.
|
|
objects = map (x: x.object) contents;
|
|
symlinks = map (x: x.symlink) contents;
|
|
suffices = map (x: if x ? suffix then x.suffix else "none") contents;
|
|
|
|
# For obtaining the closure of `contents'.
|
|
# Note: we don't use closureInfo yet, as that won't build with nix-1.x.
|
|
# See #36268.
|
|
exportReferencesGraph =
|
|
map (x: [("closure-" + baseNameOf x.symlink) x.object]) contents;
|
|
pathsFromGraph = ./paths-from-graph.pl;
|
|
|
|
inherit compressor prepend;
|
|
}
|